A
human system interface (HSI) for contactlessly controlling a device for a
medical procedure is configured to generate a
control space, measure a position of a user in the
control space, provide a first contactless haptic stimulus in the
control space to the user based on the measured position, measure a contactless haptic input from the user in the control space, provide a second haptic stimulus to the user depending on the contactless haptic input, and, based on the contactless haptic input, change a parameter of the HSI and / or provide a parameter to the device connected to the HSI.